STRATEGIC PRIORITY: Transportation & Infrastructure
AGENDA DATE: May 22, 2024
COUNCIL DISTRICT(S): 6, 13
DEPARTMENT: Water Utilities Department
EXECUTIVE: Majed Al-Ghafry
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SUBJECT
Title
Authorize a construction services contract for flood protection and storm drainage relief improvements associated with the Pensive Drive Channel and Walnut Hill Lane storm drainage system - Austin Filter Systems, Inc., lowest responsible bidder of four - Not to exceed $16,497,925.00 - Financing: 2024 Certificate of Obligation Fund ($11,711,255.00), Water Capital Improvement F Fund ($1,000,000.00), Wastewater Capital Improvement F Fund ($2,512,545.00),Water Capital Improvement G Fund ($271,110.00), and Water Construction Fund ($1,003,015.00)
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BACKGROUND
Fourteen homes in the Pensive Drive Neighborhood are susceptible to flooding due to undersized drainage infrastructure. The drainage system for the Pensive Drive neighborhood involves a trapezoidal concrete-lined channel that subsequently connects to a storm drainage line in Walnut Hill Lane. The Walnut Hill Lane storm drainage line was installed in the 1960s and consists of a ten-foot diameter elliptical pipe with a horseshoe shape.
This action will authorize a construction contract with Austin Filter Systems, Inc. to upsize and rehabilitate the existing Pensive Drive Channel and install a bypass storm drainage system within Pensive Drive from the alley north of Timberview Road to Walnut Hill Lane. The bypass relief system will divert flow from the Channel and convey it downstream along Pensive Drive directly into the Walnut Hill storm drainage system. Together the modified channel and new bypass system will have more capacity to handle peak stormwater flows and mitigate flood risks. The construction project also includes the rehabilitation of the existing drainage system along Walnut Hill, the installation of new water and wastewater mains in Pensive Dr...
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